Wow, you made such a gem.
Nurikabe is my favorite pen and paper puzzle of all time.
Turns out I had recently bought an old Gameboy Color to relieve the Tetris I remember from my childhood on real hardware, you wouldn't believe how happy I was when I goggled "Nurikabe for Gameboy" and found this game!
I loaded it up on my EZFlash and have been playing it every day on real hardware.
The reason I think you deserve a lot of praise is that you basically made a perfect UI for Nurikabe (something that a lot of web and mobile versions fail at).
It might seem simple to passers by, but I see all the little details that just work to make the experience really "tactile" and wonderful, such as the way you can hold a button and "drag" with the d-pad, the cute graphics and the sound effects.
Great attention to detail. Thank you so much for making this.